Finding the Fourth Proportional to 77,856, 107,441.28 and 42,528

Step by Step Solution

1. Step 1: Write the proportion equation
   77,856 : 107,441.28 = 42,528 : x
2. Step 2: Convert to fraction form
   77,856/107,441.28 = 42,528/x
3. Step 3: Cross multiply
   77,856x = 107,441.28 × 42,528
4. Step 4: Simplify right side
   77,856x = 4,569,262,755.84
5. Step 5: Solve for x
   x = 4,569,262,755.84/77,856
6. Step 6: Final answer
   x = 58,688.64